Biography of Thomas Courtenay 14th Earl Devon 1432-1461
Paternal Family Tree: Courtenay
Maternal Family Tree: Aoife NI Diarmait Macmurrough Countess Pembroke and Buckingham 1145-1188
Around 1420 [his father] Thomas Courtenay 13th Earl Devon (age 6) and [his mother] Margaret Beaufort Countess Devon (age 11) were married. She the daughter of John Beaufort 1st Marquess Somerset and Dorset and Margaret Holland Duchess Clarence (age 35). He the son of Hugh Courtenay 12th Earl Devon (age 31) and Anne Talbot Countess Devon (age 27). They were third cousins. He a great x 4 grandson of King Edward "Longshanks" I of England. She a great granddaughter of King Edward III of England. 
On 16 Jun 1422 [his grandfather] Hugh Courtenay 12th Earl Devon (age 33) died. His son [his father] Thomas Courtenay 13th Earl Devon (age 8) succeeded 13th Earl Devon, 8th Baron Okehampton, 6th Baron Courtenay. [his mother] Margaret Beaufort Countess Devon (age 13) by marriage Countess Devon.
In 1432 Thomas Courtenay 14th Earl Devon was born to Thomas Courtenay 13th Earl Devon (age 18) and Margaret Beaufort Countess Devon (age 23). He a great x 2 grandson of King Edward III of England.
In 1449 [his mother] Margaret Beaufort Countess Devon (age 40) died.
After 09 Sep 1456 Thomas Courtenay 14th Earl Devon (age 24) and Mary Capet Countess Devon (age 10) were married at Coventry [Map]. She by marriage Countess Devon. She the illegitmate daughter of Charles Valois Anjou Count Maine (age 42). He the son of Thomas Courtenay 13th Earl Devon (age 42) and Margaret Beaufort Countess Devon. He a great x 2 grandson of King Edward III of England. 
In 1458 [his father] Thomas Courtenay 13th Earl Devon (age 44) died at Yattendon Castle [Map]. He was buried at Courtenay Chantry Chapel Exeter Cathedral. His son Thomas Courtenay 14th Earl Devon (age 26) succeeded 14th Earl Devon, 9th Baron Okehampton, 7th Baron Courtenay.
Chronicle of Gregory 1460. Then the Quene (age 30) havynge knowelechynge of thys praty whyle sche sende unto the Duke of Somersett (age 24), at that tyme beynge in Dorset schyre at the Castelle of Corffe [Map], and for the Erle of Devyschyre (age 28), and for Elysaundyr Hody, and prayde hem to com to hyr as hastely as they myght, with hyr tenantys as stronge in hyr harnys as men of warre, for the Lorde Rosse (age 33), the Lorde Clyfforde (age 25), the Baron of Grestocke (age 46), the Lorde Nevyle (age 50), the Lorde Latymer (age 53), were waytyng a-pon the Duke of Excete[r] (age 30) to mete with hyr at Hulle [Map]. And thys mater was not taryd but fulle prevely i-wrought; and she sende letters unto alle hyr ehyffe offycers that they wold doo the same, and that they shulde warne alle the servantys that lovyd hyr or purposyd to kepe and rejoyse hyr of Yysce, to wayte a-pon hyr at Hulle by that day as hit a-poyntyd by hyr. Alle thes pepylle were gaderyd and conveyde so prevely that they wer hole in nombyr of xvM [Note. 15000] or any man wolde be-leve hyt; in so moche yf any man sayde, or tolde, or talkyd of suche gaderyng, he shulde be schende, and sum were in grete donger, for the comyn pepylle sayde by thoo that tolde the, troughthe, "Ye talke ryght ye wolde hit were," and gave noo credens of hyr sayynge. But the laste the lordys purposyd to knowe the troughthe. And the ix day of December nexte folowyng the Duke of Yorke (age 49), the Erle of Salysbury (age 60), the Erle Rutlond (age 17) (he was the Duke of Yorke ys secunde sone, one the beste dysposyd lorde in thys londe), and Syr Thomas Haryngdon (age 60), whythe many mo knyghtys and quyers and grete pepylle with hem, and soo departyd owte of London towarde Yorke, &c.
Chronicle of Gregory 1461. Ande the xxix [29] day of the same monythe of Marche, that was þe Palme Sunday, the kyng (age 18) mette with the lordys of the Northe at Schyrborne. And there was on Harrys party that was kynge-
Prynce Edwarde (age 7), Kyng Harrys son.
The Duke of Exceter (age 30).
The Duke of Somersett (age 25).
The Erle of Northehumberlond (age 39).
The Erle of Devynschyre (age 29).
The Lorde Bemound (age 33).
The Lorde Clyfforde (deceased).
The Lorde Nevyle.
The Lorde Wellys (age 51).
The Lorde Wylby (age 40).
The Lorde Harry of Bokyngham.
The Lorde Ryvers (age 56).
The Lorde Schalys.
The Lorde Maule (age 50).
The Lorde Ferys of Groby (age 23).
The Lorde Foschewe. [Possibly John Fortescue (age 67)]
The Lorde Lovelle (age 28).
Syr Thomas Hammys, captayne of alle the fote men.
Syr Thomas Tressam (age 41).
Syr Robert Whytyngham (age 32).
Syr John Dawne.
And the yonge Lorde of Schrouysbury (age 12), and many moo othyr, bothe lordys, knyghtys, and squyers.
Here ben the namys of the lordys that were slayne in the felde in Kynge Harrys (age 39) party.
The Erle of Northehumberlond (age 39),
The Lorde Clyfforde (deceased),
The Lorde Nevyle (age 51),
The Lorde Wellys (age 51),
The Lorde Maules (age 50),
And many moo then I can reherse; but whythe [t]es and othyr that were slayne in the fylde ys a grete nombyr, by syde xlij [42] knyghtys that were slayne aftyr; the hoole nombyr ys xxxv M1 [35000] of comeners. Jhesu be þou marcyfulle unto hyr soulys. Amen.
And the lordys before wretyn fledde, the substance in to Schotlond with the Kynge Harry (age 39) and Quene Margarete (age 31), and sone the Prynce (age 7) with hym, fulle of sorowe and hevynys, no wondyr. God knowythe, but every man deme the beste tylle the trought be tryde owte. For many a lady lost hyr beste be lovyd in that batayle.
Chronicle of Gregory 1461. 03 Apr 1461. The Erle of Devynschyre (age 29) was seke, and myght not voyde a waye, and was take and be heddyd. And the Erle of Wylte schyre (age 40) was take and brought unto Newe Castell [Map] to the Kynge. And there hys hedde was smete of, and send unto London to be sette uppon London Brygge [Map]. And Docter Morton (age 41), the Prynces chaunceler, was take with hym and put in the Towre, but he schapyd a way longe tyme aftyr, and ys by yonde the see with the Quene, &c.
On 03 Apr 1461 Thomas Courtenay 14th Earl Devon (age 29) was beheaded at York [Map] and attainted. Earl Devon forfeit..
John Heron of Ford Castle Northumberland (age 45), Robert Dethick (age 86), Andrew Trollope and his son David Trollope were killed.
Thomas Grey 1st Baron Grey of Richemont (age 43) was executed.
Paston Letters Volume 2 450. 04 Apr 1461. William Paston and John Playters to John Paston (age 39).
To my maister, John Paston, in hast,
Please you to knowe and wete of suche tydyngs as my Lady of York hath by a lettre of credens, under the signe manuel of oure Soverayn Lord King Edward, whiche lettre cam un to oure sayd Lady this same day, Esterne Evyn, at xj. clok, and was sene and red by me, William Paston.
Fyrst, oure Soverayn Lord (age 18) hath wonne the feld, and uppon the Munday next after Palmesunday, he was resseved in to York with gret solempnyte and processyons. And the Mair the Yorkist cause and Comons of the said cite mad ther menys to have grace be Lord Montagu (age 30) and Lord Barenars (age 45), whiche be for the Kyngs coming in to the said cite desyred hym of grace for the said cite, whiche graunted hem grace. On the Kyngs parte is slayn Lord Fitz Water (deceased), and Lord Scrop (age 23) sore hurt; John Stafford, Horne of Kent ben ded; and Umfrey Stafford, William Hastyngs (age 30) mad knyghts with other; Blont is knygth, &c.
Un the contrary part is ded Lord Clyfford (deceased), Lord Nevyle (deceased), Lord Welles (deceased), Lord Wyllouby, Antony Lord Scales, Lord Harry, and be supposyng the Erle of Northumberland, Andrew Trollop, with many other gentyll and comons to the nomber of xx.ml. (20000).
Item, Kyng Harry, the Qwen, the Prince, Duke of Somerset, Duke of Exeter, Lord Roos, be fledde in to Scotteland, and they be chased and folwed, &c. We send no er un to you be cause we had non certynges tyl now; for un to this day London was as sory cite as myght. And because Spordauns had no certeyn tydyngs, we thought ye schuld take them a worthe tyl more certayn.
Item, Thorp Waterfeld is yeldyn, as Spordauns can telle you. And Jesu spede you. We pray you that this tydyngs my moder may knowe.
Be your Broder,
W. PASTON.
T. PLAYTERS.
Comes Northumbriæ (deceased).
Comes Devon (deceased).
Dominus de Beamunde.
Dominus de Clifford (deceased).
Dominus de Nevyll (deceased).
Dominus de Dacre (deceased).
Dominus Henricus de Bokyngham.
Dominus de Well[es] (deceased).
Dominus de Scales Antony Revers.
Dominus de Wellugby.
Dominus de Malley Radulfus Bigot Miles.
Millites.
Sir Rauff Gray.
Sir Ric. Jeney.
Sir Harry Bekingham.
Sir Andrew Trollop.
With xxviij.ml. (28000) nomberd by Harralds.
Kings Wessex: Great x 12 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 9 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 15 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 10 Grand Son of Maredudd ap Bleddyn King Powys
Kings England: Great x 2 Grand Son of King Edward III of England
Kings Scotland: Great x 10 Grand Son of Malcolm III King Scotland
Kings Franks: Great x 8 Grand Son of Louis VII King Franks
Kings France: Great x 4 Grand Son of Philip "The Fair" IV King France
Great x 4 Grandfather: Hugh Courtenay 9th Earl Devon 5 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: Hugh Courtenay 10th Earl Devon 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Agnes St John Countess Devon
Great x 2 Grandfather: Edward Courtenay Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Humphrey Bohun 4th Earl Hereford 3rd Earl Essex
Great x 3 Grandmother: Margaret Bohun Countess Devon Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Princess Elizabeth of Rhuddlan Countess Essex, Hereford and Holland Daughter of King Edward "Longshanks" I of England
Great x 1 Grandfather: Edward "Blind Earl" Courtenay 11th Earl Devon 2 x Great Grand Son of King Edward "Longshanks" I of England
GrandFather: Hugh Courtenay 12th Earl Devon 3 x Great Grand Son of King Edward "Longshanks" I of England
Great x 1 Grandmother: Maud Camoys Countess Devon
Father: Thomas Courtenay 13th Earl Devon 4 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Gilbert Talbot 1st Baron Talbot 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: Richard Talbot 2nd Baron Talbot 7 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Anne Boteler Baroness Talbot
Great x 2 Grandfather: Gilbert Talbot 3rd Baron Talbot 8 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: John Comyn 3rd Lord Baddenoch 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandmother: Elizabeth Comyn Baroness Talbot 7 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Joan Valence Lady Baddenoch
Great x 1 Grandfather: Richard Talbot 7th Baron Strange Blackmere 4th Baron Talbot 2 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Edmund Butler 1st Earl Carrick
Great x 3 Grandfather: James Butler 1st Earl Ormonde
Great x 2 Grandmother: Petronella Butler Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandfather: Humphrey Bohun 4th Earl Hereford 3rd Earl Essex
Great x 3 Grandmother: Eleanor Bohun Countess Ormonde Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandmother: Princess Elizabeth of Rhuddlan Countess Essex, Hereford and Holland Daughter of King Edward "Longshanks" I of England
GrandMother: Anne Talbot Countess Devon 3 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandfather: Fulk Strange 1st Baron Strange Blackmere
Great x 3 Grandfather: John Strange 2nd Baron Strange Blackmere 3 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandmother: Eleanor Giffard Baroness Strange Blackmere
2 x Great Grand Daughter of King John "Lackland" of England
Great x 2 Grandfather: John Strange 4th Baron Strange Blackmere 4 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandfather: William Boteler 1st Baron Wem and Oversley
Great x 3 Grandmother: Ankaret Boteler Baroness Strange Blackmere 4 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Ela Herdeburgh Baroness Wem and Oversley 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 1 Grandmother: Ankaret Strange 7th Baroness Strange Blackmere, Baroness Talbot 5 x Great Grand Daughter of King John "Lackland" of England
Great x 4 Grandfather: Richard Fitzalan 8th Earl Arundel
3 x Great Grand Son of King John "Lackland" of England
Great x 3 Grandfather: Edmund Fitzalan 9th Earl Arundel 4 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandmother: Alice Saluzzo Countess Arundel
6 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandmother: Mary Fitzalan Baroness Strange Blackmere 5 x Great Grand Daughter of King John "Lackland" of England
Great x 4 Grandfather: William Warenne
Great x 3 Grandmother: Alice Warenne Countess Arundel
Great x 4 Grandmother: Joan Vere
Thomas Courtenay 14th Earl Devon 2 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: King Edward "Longshanks" I of England Son of King Henry III of England
Great x 3 Grandfather: King Edward II of England Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Eleanor of Castile Queen Consort England 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: King Edward III of England Son of King Edward II of England
Great x 4 Grandfather: Philip "The Fair" IV King France 3 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Isabella of France Queen Consort England 4 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Joan Blois I Queen Navarre
3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 1 Grandfather: John of Gaunt 1st Duke Lancaster Son of King Edward III of England
Great x 4 Grandfather: John Hainault II Count Hainault II Count Holland 5 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: William Hainault I Count Hainault III Count Avesnes III Count Holland II Count Zeeland 6 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Philippa Luxemburg Countess Hainault and Holland
5 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandmother: Philippa of Hainault Queen Consort England 5 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Charles Valois I Count Valois 3 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Joan Valois Countess Zeeland Holland Avesnes and Hainault 4 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Margaret Capet Countess Valois 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
GrandFather: John Beaufort 1st Marquess Somerset and Dorset Grand Son of King Edward III of England
Great x 2 Grandfather: Giles "Payne" Roet
Great x 1 Grandmother: Katherine Roet Duchess Lancaster
Mother: Margaret Beaufort Countess Devon Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Robert de Holand of Upholland
Great x 3 Grandfather: Robert Holland 1st Baron Holand
Great x 2 Grandfather: Thomas Holland 1st Earl Kent 4 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Alan Zouche 1st Baron Zouche Ashby
2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Maud Zouche Baroness Holand 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Eleanor Segrave
Great x 1 Grandfather: Thomas Holland 2nd Earl Kent Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: King Edward "Longshanks" I of England Son of King Henry III of England
Great x 3 Grandfather: Edmund of Woodstock 1st Earl Kent Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Margaret of France Queen Consort England 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Joan "Fair Maid of Kent" Princess Wales Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandfather: John Wake 1st Baron Wake of Liddell
2 x Great Grand Son of King John "Lackland" of England
Great x 3 Grandmother: Margaret Wake Countess Kent 3 x Great Grand Daughter of King John "Lackland" of England
Great x 4 Grandmother: Joan Fiennes Baroness Wake Liddell
4 x Great Grand Daughter of King Henry "Curtmantle" II of England
GrandMother: Margaret Holland Duchess Clarence 2 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 4 Grandfather: Richard Fitzalan 8th Earl Arundel 3 x Great Grand Son of King John "Lackland" of England
Great x 3 Grandfather: Edmund Fitzalan 9th Earl Arundel 4 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandmother: Alice Saluzzo Countess Arundel 6 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandfather: Richard Fitzalan 10th Earl Arundel 8th Earl Surrey 5 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandfather: William Warenne
Great x 3 Grandmother: Alice Warenne Countess Arundel
Great x 4 Grandmother: Joan Vere
Great x 1 Grandmother: Alice Fitzalan Countess Kent 2 x Great Grand Daughter of King Henry III of England
Great x 4 Grandfather: Edmund "Crouchback" Plantagenet 1st Earl of Leicester 1st Earl Lancaster Son of King Henry III of England
Great x 3 Grandfather: Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster Grand Son of King Henry III of England
Great x 4 Grandmother: Blanche Capet Queen Navarre 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Eleanor Plantagenet Countess Arundel and Surrey
Great Grand Daughter of King Henry III of England
Great x 4 Grandfather: Patrick Chaworth
Great x 3 Grandmother: Maud Chaworth
Great x 4 Grandmother: Isabella Beauchamp Baroness Monthermer